Comparison between RBC and WBC

RBC (Red Blood Cells or Erythrocytes)
WBC (White Blood Cells or Leucocytes)
1.      Red coloured due to presence of haemoglobin
2.      Nucleus, Golgi complex, mitochondria etc are absent in mature mammalian RBC
3.      Lifespan is 120 days
Generally short lived (1- 15 days)
4.      Function: Transports oxygen from lungs  to the tissues and carbon dioxide from tissues to lungs
It acts as the part of immune system and gives defense to our body against pathogens
5.      Normal Count is 5 - 5.5 millions/ mm3
Normal Count is 6000-8000 /mm3
6.      Formed in: Red Bone marrow
Formed in: Red Bone marrow, lymph glands, spleen
7.      Single type
Many types such as neutrophil, basophil, eosinophil, monocyte and lymphocyte.

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